Struggling to understand how to call SymFromAddr

[scottbilas]

I'm having the hardest time understanding how to give DbgHelp.SymFromAddr the SYMBOL_INFO it requires, such that I get back the symbol name.

I see some custom marshaling in SafeAnysizeStringMarshaler<SYMBOL_INFO> but I don't know the right way to engage it.

My current workaround:

• Copy-paste SYMBOL_INFO to my own struct where I adjust SizeConst on Name to 500
• si.MaxNameLen = 500
• si.SizeOfStruct = (uint)Marshal.SizeOf(si) - si.MaxNameLen*2.

This gets me back a true result and a valid symbol with the name set properly.

What am I doing wrong with the Vanara SYMBOL_INFO? Best I could get out of it was a single character set on Name, and I tried many combinations on MaxNameLen and SizeOfStruct.

[dahall]

You're not doing anything wrong. There was a problem with the definition of SYMBOL_INFO that I fixed in my latest commit. It will be on NuGet by the end of the week and available in a few minutes on AppVeyor. To simplify use, use the following:

SYMBOL_INFO si = SYMBOL_INFO.Default; // this sets SizeOfStruct and MaxNameLen appropriately
SymFromAddr(hProc, addr, ref disp, ref si);

[scottbilas]

Wow, thank you for the fast response. I'll look forward to the updated nuget. Thanks again!